Apparatus for impregnation of wood.



B. F. WATKINS. APPARATUS FOR IMPREGNATION 0F WOOD.

APPLICATION FILED MAR. 1, 1906.

Patented Feb. 23, 1909 8 SHEETS-SHEET 1.

QR H1 cases B. F. WATKINS. APPARATUS FOR IMPREGNATION OF WOOD. APPLICATION FILED MAR.1,1906.

91 3,598,. Patented Feb. 23, 1909.

8 SHEETS-SHEET 2.

B. F. WATKINS.

APPARATUS FOR IMPREGNATION QF WOOD.

APPLICATION FILED MAB. 1, 1906. I

' Patented Feb. 23, 1909.

8 SHEETS-SHEET 3,

B. F. WATKINS. APPARATUS FOR IMPREGNATION 0F WOOD.

APPLICATION FILED MAR.1, 1906. A 91 3,593. Patented Feb. 1909.

8 SHEETS-SHEET 4,

B. F. WATKLNS RATUS FOR IMPR EGNATION 0F WOOD.

APPA

AFPLIG ATION FILED MAR.1, 1906.

Patented Feb. 23, 1909.

8 SHEETS-SHEET 5.

B. F. WATKINS.

APPARATUS FOR IMPREGNATION 0F WOOD APPLICATION FILED MAR. 1, 1906.

SHEET Patented Feb. 23

SHEET B. F. WATKINS.

APPARATUS FOR IMPREGNATION 0F WOOD APPLICATION FILED MAR. 1, 1906.

Patented Feb. 23, 1909.

TATKINS.

APPARATUS FOR IMPREGNATION OF WOOD.

APPLIGA'IION FILED MALL 1 1906.

Patented Feb. 23, 1909.

8 SHEETS-SHBET 8 UNITED srArEs PATENT OFFIOE- .BEhlJAMIN r. WATKINS, or are, NEW YORK, ASSIGNOR ao CONSOLIDATED csoss TIE COMPANY, OF NEW YORK, N. Y;, A conroni'r oN on NEW JERSEY.

APPARATUS FOR IMPREGNATION OF WOOD.

Specification of Letters Fatent.

Patented Feb. 23, racev Application filed. March 1, 1906. Serial No. 303,635.

To all whom it may concern:

Be itknown that I, BENJAMIN.F.'VVAT KINS, a citizen of the United States of America, residing in Rye, county of estchester, State of New York, have invented certain new and useful Improvements in Apparatus for Impregnation of Wood, of whiclrthe following is a specification.

This invention comprises an organization em' loyin two tanks containing difl'erent bat s and apparatus by which timber immersed in one tank may be readily withdrawn and immersed in the other tank. I-m regnation of wood by the solution in the tan s may be either for preservation or fire proofing.

The apparatus is primarily designed for practicin the im regnation process set out 111 U. S.- tters atent to Tomaso Giussani No. 707,224 dated August l9, 1902.

In the accom anying drawings: Figure 1 is a plan view: ig. 2, a side elevation: Fig. 3, a transverse section on line 3, 3, f Fig. 1: Fig. 4, a plan view of the rear part of the hot tank with the roof removed: Fig. 5, a plan view of the front part of the hot tank with. the roof broken away: Fig. 6, a side elevation of the hot tank with the side wall broken away: Fig: 7, a central longitudinal section ofi the rear part of the hot tank: Fig. 8, a cross section through the hot tank on line 8, 8, of Fig. 1 :Fig. 9, a detail view showing the condensed vapor discharge spouts of the not tank: and Fig. 10, a cross section of the cold tank on line 10, of Fig. 1.

The hot tank A and cold tank B as viewed in plan (Fig. 1) are elongated chambers, constructed and e uip ed as hereinafter described or in sudli ot ier appropriate way to carry out the intended purposes, aind are placed preferably at an acute angle '0 each other. They are respectively equipped with.

car tracks C, C that converge upon a switch and run out into a common track section C, equipped with a turnout switch C A power driven drum or Windlass Dis rovided with a cable dby means of whicn loaded trucks may at will, be allowed to run into either the hot or cold tank and at willwithdrawn. Viewed in side elevation Fig. 2, the tracks and front ortions of the tanks are inclined and at .t 1e rear horizontal. The entrances of both tanks are provided with a pro riately constructed inclosures ca able oFrea' y manipulation, sliding doors D eing .Nert-ioal stz shown, Fig. 3. Suitable dimensions for a practicable plant are as follows: The rear horizontal ortion of each tank may be ninety-five feet in length, and the front portion, having an inclination 0" say eight per cc cent, may be one hundred feet long. If the tank A is charged to proper depth with a bath heated to desired temperature by steam pipes, or otherwise, and the tank B is charged with a cold bath, cooled, if need be, by circulation of refrigerating medium in a suitable pipe system, a truck loaded with piles, telegraph poles, railroad cross ties or other tinibor, may by means of the Windlass D be allowed to run into the hot tank and suitable provision being made for holding the load in place upon the truck and for preventing rise of the latter because of the buoyant energy of the. timber, the latter may remain submerged in the hot bath as long as desired, and then the truck may be withdrawn, switched to the cold bath track and allowed to run into the cold tank in the bath in which it will remain submerged and from which it may be withdrawn. The system may be 80 operated with three trucks one of which is unloaded and loaded in the yard while one is immersed in the solution of the hot tank and the other is lll'lIIl6lS0('l in the solution of the cold tank.

The apparatus is to be constructed, as indicated, upon suitable foundations, and the details of construction of the res )ective tanks may be as'follows: Upon the Oors thereof are laid the tracks (3 upon which trucks F run. Above, the tracks supported by a propriate brackets E are angular guards l beneath which the whcvls of the trucks travel and which act to resist the buoyant energy of the load. The trucks may each have, as indicated, two sets o'l" running gears and anappropriate body mounted thereon as usual. 'ards l carried by the sides of the truck be y retain the load in position and the latter may be prevented from floating by 100 restraining chains F (Fig. 8). The sides of the tank may be constructedv of iron inclosed by concrete walls as indicated for instance in Figs. 6 and The hot tank A, see particularlyFigs. 4, 5 and 7, is equipped with 105 a system of steam pipes G, G, G, g, representing the various steam inlets. \Vater of condensation is led oil' by small pi es h, shown in dotted lines, for instance, in ig. 4 and discharged at one or more points. In 119 ';;-Fig. 4, the condensed water pipe is shown as bottom.

iischanging into a well H/formed in an en- :1 argement or lateral extension A of the hot tank from whence it may be pumped. The heating pi 'es are shown as arranged upon the alhis location is immaterial, as is any special system of steam or hot water heating. It is sufficient that by a )propriatc means the solution within the tan be raised to and maintained at desired temperature. Detailed description of the heating system is therefore quite unnecessary. To the peaked r reversely inclined roof I which con- .structed of any appropriate materials, is sus ended by means of brackets I an interior iiood or root 1 preferably formed of metal and having perforations i around east of which on the upper side the metal is elevated. Liquid condensation of vapors formed on the upper suriace of the hood I will run into troughs l which, being appropriately in- -struction as the hot tank.

clined, will direct the li uid to a discharge .spout K by which it is de 'veredto one of the compartments of an outside receiving tank I M. Another spout N connected with a similar system of troughs N (Figs. 8 and 9) delivers liquid of condensation to another compartment of the exterior tank M. .This arrangement is adapted because the solution in tank A may be of such character that the condensed liquid formed above the hood 1 will have different constituents from that formed below the hood. Both of them may contain some of the solution evaporated at the temperature employed but one, i. c. that liquid formed above the hood maycontain a larger percentage of -water or. vaporizabie constituents of the timlieiyand it is deemed desirable that they should lie separated. The cold tank B is generally of the same con The coils O for circulation, when desired, of a refrigerating medium are placed upon the side walls of the tank. There are no perforations in-the inner roof or. hood I and-the dischargespout P opens directly to the tank there being no sys tem of gutters. In both tanks, however, the

-discharge spoutmay perform the function of solution and so relieve presdischarging the should the sure upon the walls of the tank :lOELdBd truck be permitted. to enter the tank with too great velocity.

Two tanks only have been shown as contemplated in the ractice of Giussani patented process. 1 7 T 1e invention is, however, not limited to the use of two tanks, but I do not claim tobe the inventor of a three tank process irrespective of the general organization or arrangement herein described.

1. Apparatus for impregnating timber by immersion, comprising two tanks, having I downwardly inclined bottoms, closed at their '.lower ends and at their upper ends adapted the tanks and adapt 'I claim as my invention:

for the admission of atruck, car-tracks laid thereinto receive a truck, a suitable. switch at which such tracks meet, and means within the tanks for preventing flotation of a truck when immersed in the baths contained in the lower levels or parts of the tanks.

2. Apparatus for impregnation oftimber.

by imn'iersion, comprising two tanks placed at an acute angle to each other, each tank havinga rear portion the floor of which is horizontal and a front wardly inclined iloor, tracks ada ted to. re-' 'ceive a truck extending into eac 1 tank and meetingat an appropriate switch, and means contained within the tanks l'or preventing portion having an up- .75

ilotation'oi a truck when innnersed' in the baths contained of the tanks.

3. Apparatus for in'ipregnation of timber by immersion comprising two tanks, having.

in the lower levels or parts 7 downwardly inclined bottoms, closed at their 8 5 lower ends and at their upper ends adapted for the admission of a truck, and each adapted to contain .a bath, tracks adapted to receive a truck entering the respective tanks, aswitch at whichthe tracks meet, means for heating the bath in one tank, and means contained within the tanks for preventing flotation of a truck when immersed in the baths contained in the lower levels or parts of the tanks.

. 1. Apparatus for impregnation of timber by lD'UIIGISlOIl comprising two inclosed tanks having downwardly inclined bottoms, closed at their lower ends and at their upper ends adapted lor'the admission. of a truck and arranged at an acute angle to each other,; tracks entering each tank and adapted to receive a truck,-a switch at which thetracks meet, means for heating a bath contained in one tank and means for cooling a bath contained in the other tank. 4

5. Apparatus for impregnation of timber by immersion comprising two tanks arranged at an angle to each other, the front portion of each. tankbeing inclined, tracks entering switch at winch the tracks meet, means for heating the bath contained in one tank, means for cooling the bath contained in the other one, and means contained within'each ed to receive a truck, a

of the tanks [or preventing flotation o'l a truck when immersed in the baths 'in the. tanks. v In testimony whereof, I have iereunto subscribed my name.

' BENJiili [IN F. WATKINS.

\fVitne'sses L. F. B ron nine,

EDWARD .C. DAvmsor' 

